Mysterious voltage drop when ESP32 board is connected

ESP_Sprite
Posts: 1218
Joined: Thu Nov 26, 2015 4:08 am

Re: Mysterious voltage drop when ESP32 board is connected

Postby ESP_Sprite » Fri Nov 24, 2017 8:29 am

Linear regulation (including the solution with resistors you chose earlier, given you choose resistors low enough to work) will always burn off the excess voltage as heat; no way around that. Look into switched mode power supplies for something that generates less hear; you can get modules like the Murata 7805SR that are plug-in replacements for the 7805 you already use.

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